Using median household income data for Phoenix, we can calculate the fraction of income the median household would use to pay rent at the median monthly gross rent rate. (deptofnumbers.com)
I've plotted household income data from the U.S. Census which shows the growth in the numbers of upper income families. (payscale.com)
The Census Bureau has released its annual report on household income data for 2016. (advisorperspectives.com)